Studio Graphene Interview Questions, Process, and Tips

Implement a counter with increment and decrement buttons and an input field to set the value.

• Create a state variable to hold the counter value

• Use onClick event handlers for the buttons to increment and decrement the counter

• Use onChange event handler for the input field to update the counter value

• Set the initial value of the counter to 0

• Validate the input value to ensure it is a number

I review test cases by ensuring they are clear, cover all scenarios, are traceable to requirements, and are prioritized.

• Ensure test cases are clear and easy to understand

• Verify that test cases cover all possible scenarios

• Ensure test cases are traceable to requirements

• Prioritize test cases based on risk and importance

Agile methodologies are a set of principles and practices that promote iterative development, collaboration, and flexibility.

• Agile methodologies prioritize customer satisfaction through early and continuous delivery of valuable software.

• They involve breaking down projects into small, manageable tasks and iterating on them in short cycles.

• Agile teams frequently communicate and collaborate with stakeholders to adapt to c...read more

Join is a SQL operation used to combine rows from two or more tables based on a related column between them.

• Types of joins include INNER JOIN, LEFT JOIN, RIGHT JOIN, and FULL JOIN

• INNER JOIN returns rows when there is at least one match in both tables

• LEFT JOIN returns all rows from the left table and the matched rows from the right table

• RIGHT JOIN returns all rows from the right table and the matched rows from the left ...read more

Adhoc testing is unplanned testing without any specific test cases, while monkey testing is random testing without any specific goal.

• Adhoc testing is performed without any specific test cases or plan.

• Monkey testing involves randomly testing the application without any specific goal.

• Adhoc testing is usually done when there is limited time for testing.

• Monkey testing is done to explore the application and find unexpected ...read more

Smoke testing is a quick test to check if the basic functionalities of the software are working, while sanity testing is a more focused test to check specific areas of the software.

• Smoke testing is performed to ensure the stability of the software build before moving on to detailed testing.

• Sanity testing is performed to verify that specific functionalities or areas of the software are working as expected.

• Example of smo...read more

High priority means the issue needs to be fixed immediately, while low severity means the issue has minimal impact on the system.

• High priority issues are typically critical to the functionality of the system and need immediate attention.

• Low severity issues may not impact the system significantly and can be addressed at a later time.

• For example, a critical bug that causes the system to crash would be high priority but l...read more

Waterfall is a linear sequential approach to software development, while V model is a parallel approach focusing on testing at each stage.

• Waterfall is a sequential model where each phase must be completed before the next phase begins.

• V model is a parallel approach where testing is done at each stage of development.

• Waterfall is more rigid and less flexible compared to V model.

• V model is more focused on testing and valid...read more

Event loop is a mechanism that allows JavaScript to perform non-blocking I/O operations.

• Event loop is a part of JavaScript runtime that continuously checks the call stack and the task queue.

• It executes the tasks in the task queue one by one, and once the task is completed, it moves to the next task in the queue.

• React is a JavaScript library for building user interfaces using a component-based architecture.

• React uses a ...read more

Callback is a function passed as an argument to another function. Closure is a function with access to its parent scope.

• Callback is used to execute a function after another function has finished executing.

• Closure is used to create private variables and methods in JavaScript.

• Example of callback: setTimeout(function(){ alert('Hello World!'); }, 3000);

• Example of closure: function outerFunction() { var privateVariable = 10...read more